Electrical system of distribution.



` matically ol' New York city, countyand State of New .current generator or source of supply, and my .tery ,to discharge to assist the alternating cur.-

y UNITED PATENT OFFICE.

WALTER E. WINSIIIP, OFNEW YORK, N. Y., ASSIGNOR TO GOULD STORAGE BATTERY COM- IANY,IA CORPORATION OF NEW YORK.

ELECTRICAL SYSTEM OF DISTRIBUTION.

specification or Letters Patent.

Patented May 5', 1908.

Application tiled September 25, 1906: Serial No. 336,134.

To all whom it may camera: l. Be it known that I, WALTER E. WINsHIP, a citizen of the United States, and a resident York,have invented certain new and useful Improvements in Electrical Systems of Distribution, of which the following is a specification. A

My invention relates to electrical systems of distribution in which there is a motor generator connecting two sides of the system, and is especially directed to the regulation of the motor generator so that it may efliciently transfer energy from' one side of the system to the other as the needs of the system require. v M im rovements have been specially deviser 'wit 1 relation to a system of the general class in which a regulating storage battery, acting through the motor generator, serves to steady theoad or voltage .of an alternatingr invention involves the automatic regulation of the motor generator responsively to the changes' of electrical condition of the altern nating current generator. This automatic regulation is effected by simultaneously and opposite] r varying the electro-motive-forces generated at the opposite ends of the motor generator responsively to current changes of the .alternating current generator in order to compel the generator to charge the battery when the load on the alternating current generator tends to fall and to compel the batrent generator when the load on the latter tends to become great. My invention, however! in its, broader phases is not limited to this specific combination.

The specific system which is diagramshown in the accompanying drawi-ng and by which, I have illustrated 'my invention, comprises speciiic apparatus for effecting the opposite regulation of the two ends of the motor generator' byoppositely regulating the field magnets of same, this apparatus including an exciter which supp ies current for the field magnet of the alternating current end of the motor generator `nd which serves as a counter machine to opzou-'the current in the field windings of the direct current end of the motor generator. i'

One feature oi my invention involves such a Y means of exciting and regulating a motor generator.

My invention also'includes various other features of combination and arrangement as hereinafter fully set out.

A main alternating* current generator is indicated at A. In the present instance this generator is supplying energy for a work circuit,V 1.

B is a-storage battery which is provided as a compensating influence being connected to the direct current end C of 'a motor generator, the alternating current end C ol' which is connected at the points 2 to the conductors leading to generator A and to the work circuit.

'When the battery is to be charged the end C of the motor generator must become the motor and the end C of the generator sup plies current at a suiliciently high electromotive-force to force current through thel batter` l'Vhen thebattery is to discharge the en( U of the motor generator becomes the motor and the end (1 must become the generator supplying current to the work circuit to assist the main generator'.

Then one end of the motor generator is to be a motor, the electro-1notive-force generated by that end must necessarily be less than that impressed upon it, whereas when it is to become a generator its voltage must rise to become or equal the controlling electro -inotive -force. This result is accomplished efficiently by the apparatus now to be described.

D are transformers whose primaries are in the circuit of the alternating current generator, fi. e., they are between the generator and the 'points 2 and also between the generator and all parts of theworking circuit. They are therefore subject to such portions of the variations of load as fall upon the main generator. ,This I consider the preferable position although; it will be understood that my invention is Trot in all its features limited to such a location, it being only important that the coil or coils for controlling the regulating apparatus should be soplaced as to be subject to fluctuations which may be used for re rulation.

`he secondaries of the transformers D are connected to a rectifier E. This rectifier mayv be of any type, being indicated in the present instance as a revolving core with p heretofore referred to.

windings but Without a field magnet, one end of the Winding bein connected to a commutator at which the irect current is collected. The rectifier is preferably rotated b a synchronous motor F. As neither of t ese devices are speciiicall novel to the present invention and have )een applied to purposes of regulation heretofore it is not necessary t0 describe them more in detail. It is obvious that the direct current output of the rectifier E will vary proportionally to the iiuctuations in the transtormers D.

The output of the-rectifier E issup lied to the field Winding G of a dynamo which may be rotated by the synchronous motor F, This dynamo acts as an exciter for the field winding c of the alternating current end Aof the motor generator, the terminals of said field winding being directly connected to the brushes of the d namo. Every variation therefore in t ie main ygenerator current Will cause a dorresponding variation in the current inthe field Winding c and thereby vary' the electro-motive force generated by the alternating current end of the motor generator. The current supplied to the field winding c ofthe direct current end of the motor generator is obtained from the battery B. In -the present instance the field winding c is shown in circuit With a portion of said battery'. In this same circuit, therefore, the dynamo G is included, its electro-'motive force opposing that of the battery. The electro-motive force of the dynamo should be less than that of the portion'of the battery employed so that any increase of current on the main generator, producing 'an increased electro-motive force of the dynamo G, 'will serve to decrease the current in the field winding c, and, therefore, decrease the electro-motive force generated by the direct current end of the motor generator. A direct current Work circuit may be connected to the direct current side ofthe system if desired.

When the generator A is giving out exactly the current for which the system is ad'usted the voltage of dynamo G will be suoli that ythe field windings c and c will receive the proper currents tol cause the motor C to iioat across the line transferring energy in neither direction. Whenever the currentin the generator A increases above its desired average the increased voltage of dynamo G will simultaneously cause the electro-motive force generated b yarmature C to fall and the electro-motive orce generated by armature C to rise, thus causing the battery to drive the direct current end of the motor generator as a motor, and cause the alternating current end of the motor generator to rive out energy to the work circuit. When the. main generator current falls below the desired average the reverse takes place and energy is transferred 'of the system, means for euppiyi from the alternating current side of the system to the batter The simultaneous regulation of both fie ds of the motor generator enables a sensitive regulation and simplifies the apparatus require( It wlll, of course, be understood that such a system in practice will be provided with various adjusting rheostats and other devices in the various circuits, that additional transformers may be provided in the regulating circuits, and, in general, that various details for the convenient manipulation of the system will be provided in conformity with the usual practice of the art. i

Having thus described my inwcntion, 4what I claim as new and' desire to seurexby Letters Patent, is:-

l. In an electrical system of distribution,

two sources of electric supply, a motor erator connecting the same, and means r oppositelyre ulatingthe electro-motive forces generated iy the two ends of the motor generator responsively to fluctuations of load of oneof said sources.

2. In an electrical system of distribution, two sources of electric supply, a motor generator connecting the same, and means for/oV posit/ely regulatingl the eld strengths of t e two ends of the motor generator res onsively to fluctuations of load of one of sai sources.

3. In an electrical system of distribution, a motor generator, means for transferring energy 1n either direction therethrough, and means for oppositely regulating the electromotive forces generated by the two ends of the motor generator responsively 'to the same variations of electric condition of the y system.

4. In an electrical system of distribution, a motor generator,l means for transferring energy in eitherA direction therethrou h, and meansv for o )positely regulating t e field strengths of the two ends-of the motor gener-l ator responsively to the same variations of electric condition of the system.

5. In an electrical system of distribution,

an alternating current generator supply cir-` 6. In an electrical system of distribution,

an altemating'current generator, an alternating current work circuit, a dir-ect current circuit, a motor generator connecting the .alternating 'current and direot'current sides electric energy to 'the direct current end of t e motor system with the battery,

generator, and means for oppositely regulating the iield strengths of thetwo ends of the motor responsiyely to th same varia-l tions of alternating current generator load.

7't The combination of an alternating 'cnn rent generator, a storage battery, a motor generator connected at its direct current'e'nd to the battery and at its alternating current end to the generator and means for oppositely varying the field strengths vof the two ends ofthe motor generator responsively to changesin the alternating current side oi the system.y v

8. The combination of an alternating cur rent generator, a storage battery, a motor generator,connected at its direct current-end to theV battery and at its alternating current end to the generator, and means for ppmz sitely varying the electro-motive forces genF erated by the two ends of the motor generator responsiyely to changes in the alter nating current side of the system. l

9. The combination of an alternating culi@ rent generator, an alternating current wor C circuit, a storage battery, a motor generator connecting the alternating current side of the and means for oppositely varying the electro-motive forces generated. by the two ends of the Inotor generator responsively to changes of electrical condition of the said generator.

10. The combination of an alternating current generator, an alternating current Work circuit, a storage battery, a motor generator connecting the alternating current side ofthe system with the battery, andmeans for oppositely varying the eld strengths of the two ends of the motor generator responsively to changes of electrical condition of said gene erator.

l1. The combination of an alternating current generator, an alternatingcurrent work circuit, a storage battery, a motor generator connecting the alternating current side of the system with the battery, andgmeansfor oppositely varying tbe l electro-motive forces generated byj the two ends of the motor generator responsively to changes of current strength of said generator.

12. The combination of an alternating current generator, an alternating current work circuit, a storage battery, a motor generator .connecting the alternating current side of the system with the battery, a coil in the alternating current generator' circuit, and apparatus controlled by said coil and connected and arranged to oppositely regulate the field strengths of the direct current and alternating currentends ofthe motor generator.

13.','l`l1e combination of' an alternating current generator, a coil in the circuit thereof,an alternating current work circuit and a motor ,generator both connectedto the sys tem beyond said coil, a storage battery connected to the direct current end of the motor generator, and apparatus controlled by said `coil andA acting o'ppositely upon the two work circuit, a storagbattery, a motor generator connecting e alternating current side ofthe system withthe battery, an alter- 'nating regulating circuit, a rectifying device supplied thereby, and means for oppositely regulating the fields .of tbe twffends of the motor generator res )onsively to yariations of the output of sai( rectifying device.

15. The combination of an alternating current generating an alternating current work circuit, a storage battery, a motor generator connecting the alternating current side of the system with the battery?, a series transformer in the alternating current generator circuit and apparatus supplied tlierebyA and acting oppositely upon the ,two field magnets of saidmotor generator. y

16, The combination of an. alternating current generator, an alternating current work circuit, a storage battery, a motor generator' connecting the' alternating current side of the system with the battery, a series transformer in the alternating current generator circuit, a rectifying device'supplied thereby, and means for oppositely regulating the strengths of the two field magnets of the motor generator responsively to Variations of output of tbe rectifying device.

. 17. The combination of anv alternating current generator, an alternating current work circuit, a storage battery, a motor generator connectingV the alternating current side of the system with the battery, a series transformer in the alternating current gen' erator circuit, a rectifying device supplied thereby, dynamo excited from the rectifying devic, and connections from said 'dynamo to t ie field windings of the motor generator arranged to oppositelyaii'ect the two field magnets of the same.

18. The rcombination of an alternating current generator, an alternating current work circuit, a storage battery, a motor generator connecting .the alternating current side of the system with the battery, a series transformer in the alternating current generator circuit, a rectifyingdevice supplied thereby, a dynamo excited from the rectifying device, said dynamo being so connected to vthe field windings of said motor generator' as to act as an exciter for'one field magnet thereof and as a counter `machine for theA other.

19.. The combination of an alternating current'generator, a motor generator, a direct current circuit-connected thereto, and apparatus controlled by variations, of electrical condition ofthe alternating current side of the system and controlling the field strength of the alternating current end of the motor generator.

20. The combination of ,f an alternating current generator, a motor generator, a direct current circuit connected thereto, and apparatus controlled by variations of current strength of the alternating current generator and controlling the field strength ofthe alternating current end of the motor generator.

21. The combination of an alternating current generator, a motor generator, a direct current circuit connected tliereto,l`nd apparatus controlled by'variations of current strengths of the alternating current 'generator and arranged to increase the field strength of the alternating current end of the motor generator as the alternating current generator current increases and vice versa.

22. The combination of' an alternating current generator, a motor generator, a direct current circuit ,connected thereto,` a storage battery connected therein, and apparatus controlled by variations of electrical condition of the alternating current side of' the system and controlling the field strength of' the alternating current end of the motor generator.

Y 23. The combination of an alternating current generator, a motor generator, a dircct current circuit connect-ed thereto, a Storage battery connected therein, and apparatus controlled by variations of current and controlling the field strength of the alternating current end of the motor generator.

24. The combination of an alternating cur rent generator, a motor generator, a direct current circuit connected thereto, a storage battery connected therein, and apparatus controlled by variations of current strength of the alternating current generator and arranged to increase the field strength of the alternating current end of' the inotolr` generator as the alternating current generator current increases and Vice versa.

25. The combination of an alternating current generator,` a motor generator, a direct current circuit connected thereto," and apparatus controlled by variations of current strengths of' the alternating current generator and arranged to increase the field strength of the alternating current end of the motor generator and decrease the field strength of the direct current end of' the motor generator as the alternating current generator current increases and vice versa.

for one end o of the alternating current end of the motor generator and decrease the field strength d the direct current end of the motor generator asthe alternating current generator current increases and/vice versa. 27. An alternating direct current motor generator, a dynamo supplying current for a field winding on one end of the motor generator, and a source of electric supply connected to a field Winding on the other end of the rnbtor generator and to said dynamo in series. 28. An alternating direct current motor generator and a dynamo connected and arranged to supply current to a field winding the motor generator Iand to op-l pose the current in a field winding for the other end of the motor generator.

29.1An alternating direct current 'motor generator and a dynamo connected and arranged to supply current to a field winding on the alternating current end of the motor generator and to oppose the current in a field winding on the direct current end of the motor generator. 4

30. An alternating' direct current motor generator, a dynamo supplying current for a field winding on one end of the motor generator, a source of electric supply connected to a field winding on the other end of the motor generator and to said dynamo in.series, and a rectif'ying device supphed from `the alternating current circuit and supplying the exciting 'current for said dynamo. strength of the alternating current generator l 31. An valternating direct cui ent `motor generator, a dynamo connected and arranged .to supply current to afield winding for one end of the motor generator and to oppose the current in a field winding for the other end of the motor generator, and a rectifying device supplied from the alternating current circuit and supplying the/ exciting current for said dynamo, f y

32. An altern lting direct current motor generator, a dyn mo connected and arranged to supply current to a field Winding on the alternating current end of the motor generator and to oppose `the current in a field Winding on the direct current end of the motor generator, and a rectifying devices plied from the alternating current circuit an' supplying the exciting current for said dynamo. f'

33. The combination of 'an yalternating current generator, a motor generator, a storage battery connected to the direct current end thereof, a rectifying device su plied from the alternating current circuit, a namo eX- cited by said rectifying device, a leld Winding for the alternating current end of the motor generator supplied by said dynamo, a field winding vfor the direct current end ofthe inotor generator, and a. circuit containing the latter field winding, the dynamo and the batteryin series. i

3,4. The combination of an lalternating current generator, a, motor generator, e Stor letter 'fie-id Winding, 'the dynamic ind xiii@- age battery connected te the direct current yteryk in series, ir end there-e1, e rectifying device receiving en 'In eesuimoiiy whereof, hrm alternating current variable with that of the 5 alternating crrent generator, e dynemo ex.- y

@mi .JY Said rectifying device a eiwld" f 'www e WrNsmi mg fol the alternating current end o1 the meN 1 y tor generator supplied by said dynamo, L Wi'ueeges: yfield Winding for the direct current end ofthe 'EDWIN Siemsiz., 10 .motor generator, and a, circuit containing the ANNA Dim.

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